TZ_05_Spring_Transaction development of pure notes

1. Database Configuration

jdbcConfiguation.java

 1> Spring EL expression using mating @Value () annotations

　

　　@Value("${jdbc.Driver}")
    private String Driver;
    @Value("${jdbc.Url}")
    private String Url;
    @Value("${jdbc.Username}")
    private String Username;
    @Value("${jdbc.Password}")
    private String Password;

　　//将该类的返回值以name = "dataSource"注入Spring容器
　　@Bean(name = "dataSource")
    public DataSource dataSource() {
        DriverManagerDataSource ds = new DriverManagerDataSource();
        ds.setDriverClassName(Driver);
        ds.setUrl (the Url); 
        ds.setUsername (the Username); 
        ds.setPassword (Password); 
        return DS; 
    } 

　　// the return value to the class name = " the jdbcTemplate " Spring injection container for handling database
     @Bean (name = "the jdbcTemplate") 
    public the JdbcTemplate the jdbcTemplate (the DataSource the dataSource) { 

        return new new the JdbcTemplate (the dataSource); 
    }

 

2.SpringConfiguation.java // similar ApplicationContext.xml

　　1> Configuration Notes

// class is specified configuration class 
@Configuration 
@ scanning annotation packet 
@ComponentScan ( "com.hdh" ) 
// import additional configuration class bytecode manner 
@Import ({JdbcConfig. Class , TransactionConfig. Class }) 
// import jabc.properties file 
@PropertySource ( "jdbc.properties" )
 // open the annotation support 
@EnableTransactionManagement
 public  class SpringConfiguration { 

}